Just For your information: If your child was having a public meltdown and it somehow indirectly led to being in trouble with the law I suggest:
Try to get the names of witnesses
Any video footage of the incident
Your child's diagnosis / people who know what you go through
A very good lawyer.
Then in court talk to the judge and work it out. Judges MAY be more understanding than a security guard or cop who had a long day.
child having a public is strange but it child having a public meltdown leads to trouble with the law should be expanded briskly so there can be to get the facts.